Finding the Fourth Proportional to 10,900.88, 16,351.92 and 3,109.08

Step by Step Solution

1. Step 1: Write the proportion equation
   10,900.88 : 16,351.92 = 3,109.08 : x
2. Step 2: Convert to fraction form
   10,900.88/16,351.92 = 3,109.08/x
3. Step 3: Cross multiply
   10,900.88x = 16,351.92 × 3,109.08
4. Step 4: Simplify right side
   10,900.88x = 50,839,427.43
5. Step 5: Solve for x
   x = 50,839,427.43/10,900.88
6. Step 6: Final answer
   x = 4,663.79